Secure paths based trustworthy fault‐tolerant routing in data center networks

Abstract

SummaryWith the continuous expansion scale of data center networks (DCNs), the probability of network failures becomes high. Trustworthy fault‐tolerant routing is extremely significant for reliable communication in data centers. In this article, we tackle the challenge by proposing a novel fault‐tolerant routing scheme for a torus‐based DCN. First, we present a multipath information transmission model based on the trust degree of reachable paths and propose a novel Hamiltonian odd–even turning model without deadlock. Second, we design an efficient deadlock‐free fault‐routing algorithm by constructing the longest fault‐free path between any two fault‐free nodes in DCN. Extensive simulation results show that the proposed fault‐tolerant routing outperforms the previous algorithms. Compared with the most advanced fault‐tolerant routing algorithms, the proposed algorithm has a 21.5% to 25.3% increase in throughput and packet arrival rate. Moreover, it can reduce the average delay of 18.6% and the maximum delay of 23.7% in the network respectively.